16712638069 has 4 divisors (see below), whose sum is σ = 17695734444. Its totient is φ = 15729541696.

The previous prime is 16712638057. The next prime is 16712638081. The reversal of 16712638069 is 96083621761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96083621761 = 22739 ⋅4225499.

It is an interprime number because it is at equal distance from previous prime (16712638057) and next prime (16712638081).

It can be written as a sum of positive squares in 2 ways, for example, as 7150731844 + 9561906225 = 84562^2 + 97785^2 .

It is a cyclic number.

It is not a de Polignac number, because 16712638069 - 2⁵ = 16712638037 is a prime.

It is a super-2 number, since 2×16712638069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16716638069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491548162 + ... + 491548195.

It is an arithmetic number, because the mean of its divisors is an integer number (4423933611).

Almost surely, 2^16712638069 is an apocalyptic number.

It is an amenable number.

16712638069 is a deficient number, since it is larger than the sum of its proper divisors (983096375).

16712638069 is an equidigital number, since it uses as much as digits as its factorization.

16712638069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983096374.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 16712638069 in words is "sixteen billion, seven hundred twelve million, six hundred thirty-eight thousand, sixty-nine".